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Show PROBLEMS OF IMPWRTAT, VALLEY AND VICINITY. F»9 the entire length of the main levee for the purpose of protection in, case the river threatens at any point. Riprap, generally, is not planned, except at threatened points, though without flood control the entire length will probably eventually require riprap. A complete drainage system will be required and is planned, as outlined m the D. W. Murphy report of January 1, 1918. POWER REQUIREMENT. As the Palo Verde project is under a gravity system, no power will be required. PALO VERDE MESA AND CHUCAWALLA VALLEY PROJECT. [Data mainly from report of Koebig <k Koebig, consulting hydraulic engineers, Los Angeles, Calif., dated Tan. 1,1917.] Location and description.-The Palo Verde Mesa and Chucawalla Valley project is located in Riverside County, California. V. The Palo Verde Mesa lies adjacent to and west of the Palo Verde Valley or Blythe project. The elevation of the mesa is from 320 to 450 feet above sea level and from 70 to 200 feet above the adjacent valley. West of the Palo Verde Mesa is a low pass between Mule and McCoy mountains, at an elevation of 460 feet above sea level. Through this pass is the Chucawalla Valley, extending northwesterly for a distance of about 30 miles and with a maximum width of about 12 miles. The valley is a large inland basin or sink, with no surface drainage outlet. There are two dry lake beds in the bottom of the basin: JPelan Lake, elevation 450 feet, near the west end of the basing and Ford Lake, the lower point of the basin, elevation 360 feet, neac the east end. HISTORICAL. On November 9, 1908, the Chucawalla Development Co. was organized for the purpose of supplying water from the Colorado River to an extensive area of desert land. * # * The lands to be covered by this irrigation project are known as the Palo Verde Mesa and the Chucawalla Valley and embrace an area of, collectively, 177,550 acres. * * * The land has been filed upon in the United States Land Office under the desert-land act, these filings having been made under the encouragement offered by the Chucawalla Development Co. * * * * * * The company made preliminary surveys of the canal lines. Investigations of and borings at the dam sites, situated 8 miles above Parker. Ariz., below BUI Williams Fork ana at Pyramid Canyon, 30 miles above Needles, Calif., also surveys of the reservoir sites*, were made in connection with the dam sites herein mentioned. * * * Further preliminary surveys, were made for a transmission line for conveying electric power to the pumping plants near the diversion dam and reservoir at Black Point. " ' The report of Koebig & Koebig, from whicn the above is quotea, outlines a general plan of the project, including a diversion dam, pumping plants, and canal systems, and includes estimates of cost) of the same. An act of Congress wa$ passed and approved February 15,1^11, entitled "An act to authorize the Chucawalla Development Com* pany to build a dam across the Colorado River at or near the mouth of Pyramid Canyon, Arizona, also a diversion intake dam at |
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Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : |